2126815236 has 288 divisors, whose sum is σ = 7122984960. Its totient is φ = 519374592.

The previous prime is 2126815211. The next prime is 2126815247. The reversal of 2126815236 is 6325186212.

2126815236 is a `hidden beast` number, since 2 + 126 + 8 + 1 + 523 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2126815236.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2925105 + ... + 2925831.

Almost surely, 2^2126815236 is an apocalyptic number.

2126815236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2126815236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3561492480).

2126815236 is an abundant number, since it is smaller than the sum of its proper divisors (4996169724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2126815236 is a wasteful number, since it uses less digits than its factorization.

2126815236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 818 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2126815236 is about 46117.4070823588. The cubic root of 2126815236 is about 1286.0067682316.

The spelling of 2126815236 in words is "two billion, one hundred twenty-six million, eight hundred fifteen thousand, two hundred thirty-six".